74 lines
1.7 KiB
PHP
74 lines
1.7 KiB
PHP
<?php
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/**
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* @see https://github.com/laminas/laminas-mail for the canonical source repository
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* @copyright https://github.com/laminas/laminas-mail/blob/master/COPYRIGHT.md
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* @license https://github.com/laminas/laminas-mail/blob/master/LICENSE.md New BSD License
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*/
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namespace Laminas\Mail\Header;
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final class HeaderName
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{
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/**
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* No public constructor.
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*/
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private function __construct()
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{
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}
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/**
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* Filter the header name according to RFC 2822
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*
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* @see http://www.rfc-base.org/txt/rfc-2822.txt (section 2.2)
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* @param string $name
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* @return string
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*/
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public static function filter($name)
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{
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$result = '';
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$tot = strlen($name);
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for ($i = 0; $i < $tot; $i += 1) {
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$ord = ord($name[$i]);
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if ($ord > 32 && $ord < 127 && $ord !== 58) {
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$result .= $name[$i];
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}
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}
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return $result;
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}
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/**
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* Determine if the header name contains any invalid characters.
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*
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* @param string $name
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* @return bool
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*/
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public static function isValid($name)
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{
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$tot = strlen($name);
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for ($i = 0; $i < $tot; $i += 1) {
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$ord = ord($name[$i]);
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if ($ord < 33 || $ord > 126 || $ord === 58) {
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return false;
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}
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}
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return true;
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}
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/**
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* Assert that the header name is valid.
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*
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* Raises an exception if invalid.
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*
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* @param string $name
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* @throws Exception\RuntimeException
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* @return void
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*/
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public static function assertValid($name)
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{
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if (! self::isValid($name)) {
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throw new Exception\RuntimeException('Invalid header name detected');
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}
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}
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}
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